one dataset · paper, tables, graph, wiki
simgrammar the grammar of simulation

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1 short with this record on screen
Short 3: A border post and a daughter, opening frameplay · 0:36
rendered · short-03.mp4 · drawn from the dataset

short 3 0:36

A border post and a daughter

transcript

A border-checkpoint game from 2013 and a daughter-raising game from 1993 belong to the same family.

We grouped 179 simulation games by the parts they're built from, then redid the grouping on 1000 random subsets of the catalog. These two land together almost every time.

Both give you time in fixed slots: a shift at the border, three slots a month for your daughter. Both keep money tight. Both keep sending authored events at you.

Princess Maker 2 is filed as a life sim, and it lands far from The Sims.

also on the pages for

definition

A generator produces cases (travelers, documents, cargo) with attributes, some injected with discrepancies at a configured rate. A rulebook of predicates defines valid cases and grows or changes each day. The player inspects, cross-references, uses tools to reveal hidden attributes, and issues a verdict; errors produce penalties and correct verdicts produce pay, within a fixed time per shift. In Papers, Please each day sets documentation requirements that grow over time, tools include interrogation, fingerprinting, and body scans, citations for protocol violations cut daily earnings, and wages must cover rent, food, and heat. Contraband Police applies the loop to cargo and vehicles. Inputs: case attributes and rules. Outputs: verdicts, earnings, penalties, and story flags.

player experience

Rising cognitive load and moral pressure. Players scan for mismatches against a growing rulebook, race the clock to earn enough for their family, and face cases where following the rules is cruel. Rule changes keep competence from settling into routine.

design levers

  • rule count and the rate at which rules are added
  • discrepancy injection rate and subtlety
  • time per shift and pay per correct case
  • penalty structure for errors
  • inspection tools and their cost in time
  • authored cases with moral stakes mixed into generated ones

failure modes

  • Too many concurrent rules overload working memory and become frustrating.
  • Purely generated cases without authored stakes reduce play to a matching task.
  • Binary penalties with no explanation leave players unsure which rule they broke.

dynamics

  • Time pressure trades accuracy against throughput, and income pressure pushes players to cut corners.
  • Bribes and sympathetic cases set economic incentives against moral judgment.
  • Rule growth makes earlier skill obsolete, renewing difficulty every day.

open questions

  • Can language models generate cases and dialogue whose discrepancies are subtle yet verifiable against a formal rulebook?
  • What rule-addition rate keeps load challenging without exceeding working memory?

appears in

the paper, 3 sections · 1 chapter · 2 episodes · 1 short
paper

4. A grammar of simulation games

linked in this section of the paper

paper
paper

5. The structure of the design space

linked in this section of the paper

paper
paper

8. Where the techniques land

linked in this section of the paper

paper
glossary

Glossary of mechanics

listed under operation & procedure, with its summary

book
ch 8

Chapter 8. Where AI lands

linked from the text

book
ep 2

Where the parts came from

on screen at 5:18 after 2000

episode
ep 3

Families across genres

on screen at 2:31 odd couples

episode
short 3

A border post and a daughter

0:36 · on screen in the short

short

sources

1
Wikipedia contributors (2026). Papers, Please. Wikipedia

provenance

runs in log/runs
2026-10-24
created2026-10-24-taxonomy-m7taxonomy
2026-10-24
reviewed2026-10-24-review-fixesmaintenance